Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
PCM Connector for Inputs and Outputs (3. 0L Engine) (2025)
2023 Acura MDX BaseSECTION PCM Connector for Inputs and Outputs (3. 0L Engine) (2025)
PCM Connector for Inputs and Outputs
| Connector Index |
|---|
| PCM Connector B (72P) |
| PCM Connector E (114P) |
PCM Connector B (72P) (female terminals)
| Terminal number | Terminal name | Description |
|---|---|---|
| 1 | FI_MAIN_RLY_OUT (POWER SOURCE) | Power source for PCM |
| 2 | INJ_RLY_OUT (INJECTOR POWER SOURCE) | Power source for PCM (injector driver) |
| 3 | PGND (GROUND) | Ground for PCM |
| 4 | PGND (GROUND) | Ground for PCM |
| 5 | PGND (GROUND) | Ground for PCM |
| 6 | Not used | |
| 7 | +B_VBU (VOLTAGE BACK UP) | Power source for PCM memory |
| 8 | ST_CUT_RLY1_CL- (STARTER CUT RELAY 1) | Drives starter cut relay 1 |
| 9 | PF-CAN A_H (CAN COMMUNICATION SIGNAL HIGH) | Sends and receives communication signal |
| 10 | PF-CAN C_H (CAN COMMUNICATION SIGNAL HIGH) | Sends and receives communication signal |
| 11 | LIN(ACG) (LOCAL INTERCONNECT NETWORK) | Sends and receives communication signal |
| 12 | PD-CAN B_H (CAN COMMUNICATION SIGNAL HIGH) | Sends and receives communication signal |
| 13 | PD-CAN B_L (CAN COMMUNICATION SIGNAL LOW) | Sends and receives communication signal |
| 14 | FAN_LO_SIGNAL (RFC RELAY 1/RFC RELAY 2) | Drives RFC relay 1 and RFC relay 2 |
| 15 | FUEL_PUMP_RLY_CL- (IMMOBILIZER FUEL PUMP RELAY) | Drives PGM-FI main relay 2 |
*1: USA and Canada models
| Terminal number | Terminal name | Description |
|---|---|---|
| 16 | DC_STS | Outputs DC-DC converter operation signal |
| 17 *1 | VSV (CANISTER CHANGE OVER VALVE) | Drives canister change over valve |
| 18 | FI_MAIN_RLY_CL- (PGM-FI MAIN RELAY 1/INJECTOR RELAY/IGNITION COIL RELAY) | Drives PGM-FI main relay 1, injector relay, and ignition coil relay |
| 19 | ST_CUT_RLY2_CL- (STARTER CUT RELAY 2) | Drives starter cut relay 2 |
| 20 | PF-CAN A_L (CAN COMMUNICATION SIGNAL LOW) | Sends and receives communication signal |
| 21 | PF-CAN C_L (CAN COMMUNICATION SIGNAL LOW) | Sends and receives communication signal |
| 22 | S-NET (SERIAL COMMUNICATION FOR IMMOBILIZER) | Sends serial communication signal |
| 23 | Not used | |
| 24 | A/C_MG_CLUTCH_RLY_CL- (A/C COMPRESSOR CLUTCH RELAY) | Drives A/C compressor clutch relay |
| 25 | FAN_CONTROL (RFC UNIT CONTROL 1) | Drives A/C condenser fan motor/RFC unit 2 |
| 26 | Not used | |
| 27 | Not used | |
| 28 | Not used | |
| 29 | Not used | |
| 30 | Not used | |
| 31 | STS (STARTER SWITCH SIGNAL) | Detects starter switch signal |
| 32 *1 | ELMP_LO (EVAP LEAK CHECK MODULE VACUUM PUMP) | Drives ELCM vacuum pump |
| 33 | VSP (VEHICLE SPEED SIGNAL OUTPUT) | Sends vehicle speed signal |
| 34 | Not used | |
| 35 | Not used | |
| 36 | Not used | |
| 37 | FPC (FUEL PUMP DRIVER) | Sends fuel pump driver unit signal |
| 38 | AFM_FGP (MASS AIR FLOW (MAF) SENSOR) | Detects MAF sensor signal |
| 39 | Not used | |
| 40 | FAN_CONTROL_2 (RFC UNIT CONTROL 2) | Drives radiator fan motor/RFC unit 1 |
| 41 | FI_SUB_RLY_CL- (PGM-FI SUBRELAY) | Drives PGM-FI subrelay |
| 42 | STOP_SW (BRAKE PEDAL POSITION SWITCH) | Detects brake pedal position switch signal |
| 43 | Not used | |
| 44 | BKSWNC (BRAKE PEDAL POSITION SWITCH) | Detects brake pedal position switch signal |
| 45 | Not used | |
| 46 | SCS (SERVICE CHECK SIGNAL) | Detects service check signal |
| 47 | Not used | |
| 48 | Not used | |
| 49 | AFM_TA (INTAKE AIR TEMPERATURE (IAT) SENSOR 1) | Detects IAT sensor 1 signal |
| 50 | Not used | |
| 51 | ST_RLY_1_TO_2 (STARTER CUT RELAY RETURN SIGNAL) | Detects starter cut relay signal |
| 52 | Not used | |
| 53 | Not used | |
| 54 | Not used | |
| 55 | Not used | |
| 56 | SG1 (SENSOR GROUND) | Sensor ground |
| 57 | VCC1 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 58 | VCC6 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 59 | VCC2 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 60 | SG2 (SENSOR GROUND) | Sensor ground |
| 61 | SG6 (SENSOR GROUND) | Sensor ground |
*1: USA and Canada models
| Terminal number | Terminal name | Description |
|---|---|---|
| 62 | IG1_FUEL_PUMP (IGNITION SIGNAL) | Detects ignition signal |
| 63 | Not used | |
| 64 | I/S_CANCEL (TURBOCHARGER BOOST SENSOR) | Detects turbocharger boost sensor signal |
| 65 | Not used | |
| 66 | TW2_SENSOR (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 2) | Detects ECT sensor 2 signal |
| 67 *1 | PTANK (EVAP LEAK CHECK MODULE PRESSURE SENSOR) | Detects ELCM pressure sensor signal |
| 68 | PD_SENSOR (A/C PRESSURE SENSOR) | Detects A/C pressure sensor signal |
| 69 | Not used | |
| 70 | APS2 (ACCELERATOR PEDAL POSITION (APP) SENSOR B) | Detects APP sensor B signal |
| 71 | AFM_VGM (MASS AIR FLOW (MAF) SENSOR - SIDE) | Ground for MAF sensor signal |
| 72 | APS1 (ACCELERATOR PEDAL POSITION (APP) SENSOR A) | Detects APP sensor A signal |
*1: USA and Canada models
PCM Connector E (114P) (female terminals)
| Terminal number | Terminal name | Description |
|---|---|---|
| 1 | Not used | |
| 2 | Not used | |
| 3 | Not used | |
| 4 | Not used | |
| 5 | MTR1 (THROTTLE ACTUATOR) | Drives throttle actuator |
| Terminal number | Terminal name | Description |
|---|---|---|
| 6 | INJH3 (No. 3 INJECTOR +) | Drives No. 3 injector |
| 7 | INJH4 (No. 4 INJECTOR +) | Drives No. 4 injector |
| 8 | INJH5 (No. 5 INJECTOR +) | Drives No. 5 injector |
| 9 | INJH1 (No. 1 INJECTOR +) | Drives No. 1 injector |
| 10 | AFHTB1 (REAR AIR FUEL RATIO (REAR A/F) SENSOR (BANK 1, SENSOR 1) HEATER CONTROL) | Drives rear A/F sensor (Bank 1, Sensor 1) heater |
| 11 | Not used | |
| 12 | Not used | |
| 13 | Not used | |
| 14 | MTR2 (THROTTLE ACTUATOR) | Drives throttle actuator |
| 15 | INJL3 (No. 3 INJECTOR -) | Drives No. 3 injector |
| 16 | INJL4 (No. 4 INJECTOR -) | Drives No. 4 injector |
| 17 | INJL5 (No. 5 INJECTOR -) | Drives No. 5 injector |
| 18 | INJL1 (No. 1 INJECTOR -) | Drives No. 1 injector |
| 19 | AFHTB2 (FRONT AIR FUEL RATIO (FRONT A/F) SENSOR (BANK 2, SENSOR 1) HEATER CONTROL) | Drives front A/F sensor (Bank 2, Sensor 1) heater |
| 20 | Not used | |
| 21 | VTCINB1 (VTC OIL CONTROL SOLENOID VALVE A (BANK 1)) | Drives VTC oil control solenoid valve A (Bank 1) |
| 22 | VTCINB2 (VTC OIL CONTROL SOLENOID VALVE A (BANK 2)) | Drives VTC oil control solenoid valve A (Bank 2) |
| 23 | WGMTR1 (TURBOCHARGER WASTEGATE CONTROL ACTUATOR + SIDE) | Drives turbocharger wastegate control actuator |
| 24 | Not used | |
| 25 | INJH6 (No. 6 INJECTOR +) | Drives No. 6 injector |
| 26 | INJH2 (No. 2 INJECTOR +) | Drives No. 2 injector |
| 27 | HPUMPH (HIGH PRESSURE FUEL PUMP +) | Drives fuel control solenoid (built into high pressure fuel pump) |
| 28 | SO2HT (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2) HEATER CONTROL) | Drives secondary HO2S (Sensor 2) heater |
| 29 | Not used | |
| 30 | VTCEXB1 (VTC OIL CONTROL SOLENOID VALVE B (BANK 1)) | Drives VTC oil control solenoid valve B (Bank 1) |
| 31 | VTCEXB2 (VTC OIL CONTROL SOLENOID VALVE B (BANK 2)) | Drives VTC oil control solenoid valve B (Bank 2) |
| 32 | WGMTR2 (TURBOCHARGER WASTEGATE CONTROL ACTUATOR - SIDE) | Drives turbocharger wastegate control actuator |
| 33 | Not used | |
| 34 | INJL6 (No. 6 INJECTOR -) | Drives No. 6 injector |
| 35 | INJL2 (No. 2 INJECTOR -) | Drives No. 2 injector |
| 36 | HPUMPL (HIGH PRESSURE FUEL PUMP -) | Drives fuel control solenoid (built into high pressure fuel pump) |
| 37 | Not used | |
| 38 | Not used | |
| 39 | Not used | |
| 40 | KSB1 (KNOCK SENSOR 1 (BANK 1)) | Detects knock sensor 1 (Bank 1) signal |
| 41 | KSB2 (KNOCK SENSOR 2 (BANK 2)) | Detects knock sensor 2 (Bank 2) signal |
| 42 | Not used | |
| 43 | CSS (ROCKER ARM OIL CONTROL SOLENOID) | Drives rocker arm oil control solenoid |
| 44 | Not used | |
| 45 | PCS (EVAPORATIVE EMISSION (EVAP) CANISTER PURGE VALVE) | Drives EVAP canister purge valve |
| 46 | IGN01 (No. 1 IGNITION COIL PULSE) | Drives No. 1 ignition coil |
| 47 | IGN02 (No. 2 IGNITION COIL PULSE) | Drives No. 2 ignition coil |
| 48 | IGN03 (No. 3 IGNITION COIL PULSE) | Drives No. 3 ignition coil |
| 49 | IGN04 (No. 4 IGNITION COIL PULSE) | Drives No. 4 ignition coil |
| 50 | Not used |
| Terminal number | Terminal name | Description |
|---|---|---|
| 51 | Not used | |
| 52 | SG1 (SENSOR GROUND) | Sensor ground |
| 53 | KSSGB1 (KNOCK SENSOR 1 (BANK 1) GROUND) | Sensor ground for knock sensor 1 (Bank 1) |
| 54 | KSSGB2 (KNOCK SENSOR 2 (BANK 2) GROUND) | Sensor ground for knock sensor 2 (Bank 2) |
| 55 | Not used | |
| 56 | Not used | |
| 57 | Not used | |
| 58 | ABV (TURBOCHARGER BYPASS CONTROL SOLENOID VALVE) | Drives turbocharger bypass control solenoid valve |
| 59 | Not used | |
| 60 | Not used | |
| 61 | IGN05 (No. 5 IGNITION COIL PULSE) | Drives No. 5 ignition coil |
| 62 | IGN06 (No. 6 IGNITION COIL PULSE) | Drives No. 6 ignition coil |
| 63 | VCC1 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 64 | WGL (TURBOCHARGER WASTEGATE CONTROL ACTUATOR POSITION SENSOR) | Detects turbocharger wastegate control actuator position sensor signal |
| 65 | THL1 (THROTTLE POSITION (TP) SENSOR A) | Detects TP sensor A signal |
| 66 | SG11 (SENSOR GROUND) | Sensor ground |
| 67 | IAT12 (INTAKE AIR TEMPERATURE (IAT) SENSOR 2) | Detects IAT sensor 2 signal |
| 68 | Not used | |
| 69 | Not used | |
| 70 | Not used | |
| 71 | Not used | |
| 72 | Not used | |
| 73 | SG2 (SENSOR GROUND) | Sensor ground |
| 74 | VCC7 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 75 | VCC8 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 76 | VCC2 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 77 | VCC3 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 78 | Not used | |
| 79 | THL2 (THROTTLE POSITION (TP) SENSOR B) | Detects TP sensor B signal |
| 80 | SG7 (SENSOR GROUND) | Sensor ground |
| 81 | TW (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1) | Detects ECT sensor 1 signal |
| 82 | OPSEN (ENGINE OIL PRESSURE SENSOR) | Detects engine oil pressure sensor signal |
| 83 | SG8 (SENSOR GROUND) | Sensor ground |
| 84 | Not used | |
| 85 | Not used | |
| 86 | Not used | |
| 87 | SG9 (SENSOR GROUND) | Sensor ground |
| 88 | VCC9 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 89 | SG10 (SENSOR GROUND) | Sensor ground |
| 90 | SG3 (SENSOR GROUND) | Sensor ground |
| 91 | POILCS (ROCKER ARM OIL PRESSURE SENSOR) | Detects rocker arm oil pressure sensor signal |
| 92 | PF (FUEL RAIL PRESSURE SENSOR) | Detects fuel rail pressure sensor signal |
| 93 | Not used | |
| 94 | AFCB2 (VIRTUAL GROUND BANK 2) | Provides reference voltage for front A/F sensor (Bank 2, Sensor 1) |
| 95 | Not used | |
| 96 | AFCB1 (VIRTUAL GROUND BANK 1) | Provides reference voltage for rear A/F sensor (Bank 1, Sensor 1) |
| Terminal number | Terminal name | Description |
|---|---|---|
| 97 | VCC11 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 98 | SO2 (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2)) | Detects secondary HO2S (Sensor 2) signal |
| 99 | Not used | |
| 100 | CAMEXB1 (CAMSHAFT POSITION (CMP) SENSOR B (BANK 1)) | Detects CMP sensor B (Bank 1) signal |
| 101 | CAMEXB2 (CAMSHAFT POSITION (CMP) SENSOR B (BANK 2)) | Detects CMP sensor B (Bank 2) signal |
| 102 | CRKP (CRANKSHAFT POSITION (CKP) SENSOR) | Detects CKP sensor signal |
| 103 | Not used | |
| 104 | Not used | |
| 105 | PB (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) | Detects MAP sensor signal |
| 106 | Not used | |
| 107 | AFVB2 (VS CELL+ BANK 2) | Detects front A/F sensor (Bank 2, Sensor 1) VS cell signal |
| 108 | Not used | |
| 109 | AFVB1 (VS CELL+ BANK 1) | Detects rear A/F sensor (Bank 1, Sensor 1) VS cell signal |
| 110 | VCC10 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 111 | SO2SG (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2) SENSOR GROUND) | Sensor ground for secondary HO2S (Sensor 2) |
| 112 | Not used | |
| 113 | CAMINB1 (CAMSHAFT POSITION (CMP) SENSOR A (BANK 1)) | Detects CMP sensor A (Bank 1) signal |
| 114 | CAMINB2 (CAMSHAFT POSITION (CMP) SENSOR A (BANK 2)) | Detects CMP sensor A (Bank 2) signal |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.